Mephistroth is a character in the setting of Warcraft and featured prominently in Blizzard’s games Warcraft 3 and World of Warcraft. He is a demon servant of Sargeras, the ultimate villain of the story. He is one of the most powerful and influential enemies in both games, largely responsible for most events leading to various disasters on Azeroth. In both games he is an interactive NPC, with whom the player has to engage in a fight. In World of Warcraft’s Legion expansion a questline involving fighting Mephistroth can award the player very powerful and rare loot.